What we built
Designed and assembled in-house: a main controller board with a SIM800L GSM modem, buck-converter power stage and screw terminals, paired with a 16-channel relay board rated at 10 A per channel.
It lets sites without Wi-Fi or wired internet control pumps, lights and machinery remotely over the cellular network.
- PCB
- GSM / SIM800L
- Relays
- Power electronics




